Scraping tool



May 10, 1966 1.. R. SCHUMANN SCRAPING TOOL W m %A Y TM E mm m VC 0 m w RA E C I N E m AV. 4 LB M 4 9 i M 2 w 2 4 MN. 7 av Qw d e l m m UnitedStates Patent 3,250,000 SCRAPING TOOL Lawrence R. Schumann, 302 BeaconSt., Boston, Mass. Filed Sept. 14, 1964, Ser. No. 396,252 4 Claims. (Cl.30-171) This invention relates to an improved tool for scraping surfacessuch as the floors and walls of buildings. It is .an object of theinvention to provide a scraping tool which and original feature of thisinvention is a groove which,

because of its specific dimension permits adjusting the blades either toleft or right at an angle from the handle. The blade in either positionenables the scraper to scrape close to a corner or wall on the left or.right. This cannot be done unless the blade is at an angle to the hand.For a more complete understanding of the invention, reference may be hadto the following description thereof, and to the drawing, of whichFIGURE 1 is a side elevation of a scraping tool embodying the invention;

FIGURE 2 is a partial plan view of the same on a larger scale;

FIGURE 3 is a section on the line- 33 of FIGURE 2;

FIGURE 4 is a partial bottom plan view of the same; and

FIGURE 5 is an exploded perspective view of the same.

The scraping tool shown on the drawing comprises a handle with arectangular head 12, these parts forming an integral member which canreadily be made of wood or any other convenient material. In the underface of the head 12 near its juncture with the handle 10 is a transversechannel or groove 14. A hole 16 is provided through the head 12 abouthalf-way between the channel 14 and the end of the head. This hole ispreferably countersunk as at 18 in the upper face of the head 12.

A steel blade 20 is releasably fastened to the bottom surface of thehead 12 by a bolt 22 which extends through the blade and the hole 16, anut 24 being threaded on the portion of the bolt which extends into thecountersink 18.

' A washer 25 is used under the nut 24. The blade 20 has a body 26consisting of two rectangular plates 28, permanently secured togetherface to face as by spotwelds. The plate 28 has two upturned flanges 32,34 along parallel edges thereof, each of these flanges making an obtusedihedral angle with the plate. Similarly, the plate 30 has twodown-turned flanges 36, 38 along corresponding parallel edges. All fourof these flanges terminate in sharp edges suitable for eifectivescraping. When the tool is in use, the upturned flange 34 is disposedwithin the channel and the down-turned blade 36 at the opposite edge ofthe blade is in the active position for engagement with the surface tobe scraped. As the blade is symmetrical, it can be turned or reversed toput any of the four flanges into the active position.

When the tool is in ordinary use as a scraper, the blade is in theposition shown in FIGURE 2, the scraping edges being at right angles tothe long axis of thetool.

3,250,000 Patented May 10, 1966 ice When the edge of a floor along awall is to be scraped,

the blade is drawn along the edge of the floor, the handle 10 will makea small angle with the wall, thus allowing more room between the handleand the wall for the hand of the operator holding the tool. An angle ofabout 5 is suflicient for this purpose, an angle of this size beingindicated in FIGURE 4 of the drawing. An increase in the size of thisangle is positively prevented by engagement of the blade 34 withbothside walls of the channel 14.

The bolt 22 passes through an aperture 40 in the center of the blade 20.This aperture may be square as indicated in FIGURE 5. If the bolt ismade with a corresponding square portion 42 adjacent to the head 46, thebolt can be held against rotation by grasping the side edges of theblade 20 when the thumb-nut 24 is being turned, thus obviating the needfor a wrench or screwdriver to hold the bolt.

I claim:

1. A scraping tool comprising a member consisting of a handle and arectangular head, said head having a transverse channel in its underface and a hole therethrough half-way between said channel and the endof the head, a blade mounted against the under face of said head, saidblade having a body comprising a rectangular plate with a flange alongone edge of the body extending into said channel, said flange beinginclined with respect to the plane of said body and terminating in asharp edge, said body having a second flange along the opposite edgethereof and inclined from the plane of the body in the oppositedirection, said second flange terminating in a sharp edge, and fasteningmeans through the center of said blade and through said hole releasableto permit angular adjustment of said blade limited by engagement of theflange in the channel with one or the other side of the channel.

2. A scraping tool as described in claim 1, said blade consisting of tworectangular plates of the same size permanently secured together face toface, each plate having two flanges on parallel edges thereof makingobtuse dihedral angles with said plates, each said flange terminating ina sharp edge.

3. A scraping tool as described in claim 1, said fastening meanscomprising a bolt passing through said blade and said head, and a nut onsaid bolt.

4. A scraping tool as described in claim 3, said blade having a squareaperture through the center thereof, said bolt having a head, a threadedshank and a squared portion adjacent to said head fitting in said squareaperture.

References Cited by the Examiner UNITED STATES PATENTS WILLIAM FELDMAN,Primary Examiner.

R. V. PARKER, JR., Assistant Examiner,

1. A SCRAPING TOOL COMPRISING A MEMBER CONSISTING OF A HANDLE AND ARECTANGULAR HEAD, SAID HEAD HAVING A TRANSVERSE CHANNEL IN ITS UNDERFACE AND A HOLE THERETHROUGH HALF-WAY BETWEEN SAID CHANNEL AND THE ENDOF THE HEAD, A BLADE MOUNTED AGAINST THE UNDER FACE OF SAID HEAD, SAIDBLADE HAVING A BODY COMPRISING A RECTANGULAR PLATE WITH A FLANGE ALINGONE EDGE OF THE BODY EXTENDING INTO SAID CHANNELM SAID FLANGE BEINGINCLINED WITH RESPECT TO THE PLANE OF SAID BODY AND TERMINATING IN ASHARP EDGE, SAID BODY HAVING A SECOND FLANGE ALONG THE OPPOSITE EDGETHEREOF AND INCLINED FRM THE PLANE OF THE BODY IN THE OPPOSITE DIRECTIO,SAID SECOND FLANGE TERMINATING IN A SHART EDGE, AND FASTENING MEANSTHROUGH THE CENTER OF SAID BLADE AND THROUGH SAID HOLE RELEASABLE TOPERMIT ANGULAR ADJUSTMENT OF SAID BLADE LIMITED BY ENGAGEMENT OF THEFLANGE IN THE CHANNEL WITH ONE OF THE OTHER SIDE OF THE CHANNEL.